<template>
  <div class="panel-tab__content">
    <el-form label-width="90px" @submit.native.prevent>
      <el-form-item label="回路特性">
        <el-select v-model="loopCharacteristics" @change="changeLoopCharacteristicsType">
          <!--bpmn:MultiInstanceLoopCharacteristics-->
          <el-option label="并行多重事件" value="ParallelMultiInstance" />
          <el-option label="时序多重事件" value="SequentialMultiInstance" />
          <!--bpmn:StandardLoopCharacteristics-->
          <el-option label="循环事件" value="StandardLoop" />
          <el-option label="无" value="Null" />
        </el-select>
      </el-form-item>
      <template v-if="loopCharacteristics === 'ParallelMultiInstance' || loopCharacteristics === 'SequentialMultiInstance'">
        <el-form-item label="循环基数" key="loopCardinality">
          <el-input v-model="loopInstanceForm.loopCardinality" clearable @change="updateLoopCardinality" />
        </el-form-item>
        <el-form-item label="集合" key="collection">
          <el-input v-model="loopInstanceForm.collection" clearable @change="updateLoopBase" />
        </el-form-item>
        <el-form-item label="元素变量" key="elementVariable">
          <el-input v-model="loopInstanceForm.elementVariable" clearable @change="updateLoopBase" />
        </el-form-item>
        <el-form-item label="完成条件" key="completionCondition">
          <el-input v-model="loopInstanceForm.completionCondition" clearable @change="updateLoopCondition" />
        </el-form-item>
        <el-form-item label="异步状态" key="async">
          <el-checkbox v-model="loopInstanceForm.asyncBefore" label="异步前" @change="updateLoopAsync('asyncBefore')" />
          <el-checkbox v-model="loopInstanceForm.asyncAfter" label="异步后" @change="updateLoopAsync('asyncAfter')" />
          <el-checkbox
            v-model="loopInstanceForm.exclusive"
            v-if="loopInstanceForm.asyncAfter || loopInstanceForm.asyncBefore"
            label="排除"
            @change="updateLoopAsync('exclusive')"
          />
        </el-form-item>
        <el-form-item label="重试周期" prop="timeCycle" v-if="loopInstanceForm.asyncAfter || loopInstanceForm.asyncBefore" key="timeCycle">
          <el-input v-model="loopInstanceForm.timeCycle" clearable @change="updateLoopTimeCycle" />
        </el-form-item>
      </template>
    </el-form>
  </div>
</template>

<script setup name="ElementMultiInstance">
const props = defineProps({
  businessObject: Object,
  type: String
})
const {businessObject,type} = toRefs(props)
const prefix = inject('prefix')
const state = reactive({
  loopCharacteristics: "",
  //默认配置，用来覆盖原始不存在的选项，避免报错
  defaultLoopInstanceForm: {
    completionCondition: "",
    loopCardinality: "",
    extensionElements: [],
    asyncAfter: false,
    asyncBefore: false,
    exclusive: false
  },
  loopInstanceForm: {},
  multiLoopInstance: undefined,
  bpmnElement: undefined
})
const {loopCharacteristics,defaultLoopInstanceForm,loopInstanceForm} = toRefs(state)

watch(()=>props.businessObject,(val) => {
  state.bpmnElement = window.bpmnInstances.bpmnElement;
  getElementLoop(val);
}, { immediate: true })

function getElementLoop(businessObject) {
  if (!businessObject.loopCharacteristics) {
    state.loopCharacteristics = "Null";
    state.loopInstanceForm = {};
    return;
  }
  if (businessObject.loopCharacteristics.$type === "bpmn:StandardLoopCharacteristics") {
    state.loopCharacteristics = "StandardLoop";
    state.loopInstanceForm = {};
    return;
  }
  if (businessObject.loopCharacteristics.isSequential) {
    state.loopCharacteristics = "SequentialMultiInstance";
  } else {
    state.loopCharacteristics = "ParallelMultiInstance";
  }
  // 合并配置
  state.loopInstanceForm = {
    ...state.defaultLoopInstanceForm,
    ...businessObject.loopCharacteristics,
    completionCondition: businessObject.loopCharacteristics?.completionCondition?.body ?? "",
    loopCardinality: businessObject.loopCharacteristics?.loopCardinality?.body ?? ""
  };
  // 保留当前元素 businessObject 上的 loopCharacteristics 实例
  state.multiLoopInstance = window.bpmnInstances.bpmnElement.businessObject.loopCharacteristics;
  // 更新表单
  if (
    businessObject.loopCharacteristics.extensionElements &&
    businessObject.loopCharacteristics.extensionElements.values &&
    businessObject.loopCharacteristics.extensionElements.values.length
  ) {
    state.loopInstanceForm.timeCycle = businessObject.loopCharacteristics.extensionElements.values[0].body
  }
}
function changeLoopCharacteristicsType(type) {
  // this.loopInstanceForm = { ...this.defaultLoopInstanceForm }; // 切换类型取消原表单配置
  // 取消多实例配置
  if (type === "Null") {
    window.bpmnInstances.modeling.updateProperties(toRaw(state.bpmnElement), { loopCharacteristics: null });
    return;
  }
  // 配置循环
  if (type === "StandardLoop") {
    const loopCharacteristicsObject = window.bpmnInstances.moddle.create("bpmn:StandardLoopCharacteristics");
    window.bpmnInstances.modeling.updateProperties(toRaw(state.bpmnElement), {
      loopCharacteristics: loopCharacteristicsObject
    });
    state.multiLoopInstance = null;
    return;
  }
  // 时序
  if (type === "SequentialMultiInstance") {
    state.multiLoopInstance = window.bpmnInstances.moddle.create("bpmn:MultiInstanceLoopCharacteristics", { isSequential: true });
  } else {
    state.multiLoopInstance = window.bpmnInstances.moddle.create("bpmn:MultiInstanceLoopCharacteristics");
  }
  window.bpmnInstances.modeling.updateProperties(toRaw(state.bpmnElement), {
    loopCharacteristics: state.multiLoopInstance
  });
}
// 循环基数
function updateLoopCardinality(cardinality) {
  let loopCardinality = null;
  if (cardinality && cardinality.length) {
    loopCardinality = window.bpmnInstances.moddle.create("bpmn:FormalExpression", { body: cardinality });
  }
  window.bpmnInstances.modeling.updateModdleProperties(toRaw(state.bpmnElement), state.multiLoopInstance, { loopCardinality });
}
// 完成条件
function updateLoopCondition(condition) {
  let completionCondition = null;
  if (condition && condition.length) {
    completionCondition = window.bpmnInstances.moddle.create("bpmn:FormalExpression", { body: condition });
  }
  window.bpmnInstances.modeling.updateModdleProperties(toRaw(state.bpmnElement), state.multiLoopInstance, { completionCondition });
}
// 重试周期
function updateLoopTimeCycle(timeCycle) {
  const extensionElements = window.bpmnInstances.moddle.create("bpmn:ExtensionElements", {
    values: [
      window.bpmnInstances.moddle.create(`${prefix}:FailedJobRetryTimeCycle`, {
        body: timeCycle
      })
    ]
  });
  window.bpmnInstances.modeling.updateModdleProperties(toRaw(state.bpmnElement), state.multiLoopInstance, { extensionElements });
}
// 直接更新的基础信息
function updateLoopBase() {
  window.bpmnInstances.modeling.updateModdleProperties(toRaw(state.bpmnElement), state.multiLoopInstance, {
    collection: state.loopInstanceForm.collection || null,
    elementVariable: state.loopInstanceForm.elementVariable || null
  });
}
// 各异步状态
function updateLoopAsync(key) {
  const { asyncBefore, asyncAfter } = state.loopInstanceForm;
  let asyncAttr = Object.create(null);
  if (!asyncBefore && !asyncAfter) {
    state.loopInstanceForm.exclusive = false
    asyncAttr = { asyncBefore: false, asyncAfter: false, exclusive: false, extensionElements: null };
  } else {
    asyncAttr[key] = state.loopInstanceForm[key];
  }
  window.bpmnInstances.modeling.updateModdleProperties(toRaw(state.bpmnElement), state.multiLoopInstance, asyncAttr);
}
onUnmounted(() => {
  state.multiLoopInstance = null;
  state.bpmnElement = null;
})

</script>
